Term induced change Definition: A change in aggregate expenditures, especially consumption expenditures, that is "induced" or triggered by a change in national income or gross domestic product. Induced changes form the foundation for the multiplier effect, which is set in motion by autonomous changes in aggregate expenditures. In terms of Keynesian economics and the Keynesian cross diagram, induced changes are seen as a movement along in the aggregate expenditures line. This two step process, autonomous changes causing induced changes, is key to explaining business cycle fluctuations.